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Code Golf: Lasers
...is sitting on top of now. Since the laser emitter is to be treated like a wall, set this to be a wall to begin with.
if (tr/v<^/>v</) {
my $o;
$o .= "\n" while s/.$/$o .= $&, ""/meg;
tr,/\\,\\/, for $o, $s;
$_ = $o;
}
If the laser beam is pointing any way except right, rotate...
Difference between CouchDB and Couchbase
...erate features of CouchDB that you will not find in the Couchbase Server.
All of the names relating to CouchDB and Couchbase can be really confusing, so I've updated this answer, to begin with a brief explanation of the most important ones.
Names and confusion
There is CouchDB, CouchIO, CouchOne,...
Difference between abstract class and interface in Python
... @L.DeLeo - are you sure your notion of has-a vs. is-a is correct? I generally view the distinction as has-a = member variable vs. is-a = inheritance (parent class or interface). Think Comparable or List in Java; those are is-a relationships, regardless of whether they're interfaces or abstract cl...
How do I include a file over 2 directories back?
.... And (2) you’d still use a relative path in your define, Unless you actually hard-code the whole absolute server path and I would refrain from that since it has only disadvantages. Or (the third alternative) you could use string manipulation to extract parent directory from the (expanded) current...
Parse a .py file, read the AST, modify it, then write back the modified source code
I want to programmatically edit python source code. Basically I want to read a .py file, generate the AST , and then write back the modified python source code (i.e. another .py file).
...
What is the difference between HTTP and REST?
...rotocol's methods – namely GET and POST. The REST way to do it is to use all of the protocol's methods.
For example, REST dictates the usage of DELETE to erase a document (be it a file, state, etc.) behind a URI, whereas, with HTTP, you would misuse a GET or POST query like ...product/?delete_id=...
Ruby: require vs require_relative - best practice to workaround running in both Ruby =1.
...ernel
def require_relative(path)
require File.join(File.dirname(caller[0]), path.to_str)
end
end
end
This allows you to use require_relative as you would in ruby 1.9.2 in ruby 1.8 and 1.9.1.
share
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How do I change the UUID of a virtual disk?
...
I really wish VirtualBox will have some UI or a window that allow us to change this
– fedmich
Feb 11 '15 at 15:49
...
Why are all fields in an interface implicitly static and final?
I am just trying to understand why all fields defined in an Interface are implicitly static and final . The idea of keeping fields static makes sense to me as you can't have objects of an interface but why they are final (implicitly)?
...
Mongoose indexing in production code
...dex in production. Once the index has been added, subsequent ensureIndex calls will simply see that the index already exists and then return. So it only has an effect on performance when you're first creating the index, and at that time the collections are often empty so creating an index would be...